ZPY36-TAP Equivalent & Substitute Parts

Part Overview

The ZPY36-TAP is a 36 V, 1.3 W Zener diode manufactured by Vishay General Semiconductor - Diodes Division in a DO-41 axial through-hole package. This component is classified as an active product with automotive-grade qualification (AEC-Q101) and is RoHS3 compliant. Zener diodes in this voltage and power class are used for voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Equivalent and substitute parts may be required due to inventory availability, supply chain constraints, or specific application requirements that demand alternative electrical or thermal characteristics.

Substiute Parts

ZPY36-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 5603ZPY36-TAP Datasheet

Current PartRFQ

1N4753A

Lumimax Optoelectronic TechnologyIn Stock: 391161N4753A Datasheet

MFR RecommendedRFQ

1N5938BRLG

onsemiIn Stock: 59811N5938BRLG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ZPY36-TAP is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage: 36 V nominal with ±5% tolerance
• Through-hole axial mounting configuration
• DO-41 package compatibility
• RoHS compliance status

Secondary Compatibility Factors:

• Power dissipation rating (1.3 W nominal; substitutes may have equal or higher ratings)
• Impedance characteristics (Zzt maximum)
• Reverse leakage current specifications
• Operating temperature range

The two substitute parts listed—1N4753A and 1N5938BRLG—both maintain the 36 V nominal Zener voltage with ±5% tolerance and through-hole axial mounting. Both are RoHS compliant and suitable for direct substitution in applications where the ZPY36-TAP is specified. Differences in power rating, impedance, and leakage current reflect variations in die design and manufacturing process between manufacturers.

Parameter Comparison

Engineering Selection Recommendations

1N4753A (Lumimax Optoelectronic Technology)

The 1N4753A is a direct functional equivalent with identical 36 V nominal Zener voltage and ±5% tolerance. This substitute has a lower maximum power rating of 1 W compared to the ZPY36-TAP's 1.3 W. The 1N4753A exhibits higher impedance (50 Ohms maximum) and higher reverse leakage current (5 µA @ 27.4 V) relative to the main part. This substitute is suitable for applications where power dissipation does not exceed 1 W and where the higher impedance and leakage characteristics are acceptable. The part is RoHS compliant and rated to 200°C maximum operating temperature.

1N5938BRLG (onsemi)

The 1N5938BRLG is a higher-power variant with the same 36 V nominal Zener voltage and ±5% tolerance. This substitute has a maximum power rating of 3 W, providing greater thermal headroom than the ZPY36-TAP. The impedance is 38 Ohms maximum, and reverse leakage current is 1 µA @ 27.4 V. The 1N5938BRLG is RoHS3 compliant and rated to 200°C maximum operating temperature. This substitute is appropriate for applications requiring higher power dissipation capability or where improved leakage characteristics are beneficial.

Both substitutes maintain automotive-grade compatibility through their RoHS compliance and through-hole axial package configuration. Selection between substitutes depends on specific application power requirements and leakage current tolerances.

Frequently Asked Questions (FAQ)

Q: Can the 1N4753A replace the ZPY36-TAP in all applications?

A: The 1N4753A is electrically compatible for applications where power dissipation does not exceed 1 W. The lower power rating and higher impedance must be evaluated against circuit requirements. Both parts share identical 36 V nominal Zener voltage, ±5% tolerance, and through-hole DO-41 package configuration.

Q: What is the primary difference between the 1N5938BRLG and the ZPY36-TAP?

A: The 1N5938BRLG has a higher maximum power rating of 3 W versus the ZPY36-TAP's 1.3 W. Both maintain 36 V nominal Zener voltage and ±5% tolerance. The 1N5938BRLG is suitable for applications requiring greater power dissipation capability.

Q: Are all three parts physically interchangeable?

A: Yes. All three parts use the DO-41 axial through-hole package and are mechanically compatible for PCB mounting. Electrical compatibility depends on circuit power requirements and impedance specifications.

Q: Does the ZPY36-TAP's automotive qualification (AEC-Q101) affect substitute selection?

A: The ZPY36-TAP carries automotive-grade qualification. The 1N4753A and 1N5938BRLG are RoHS compliant but do not specify AEC-Q101 qualification. Applications requiring automotive-grade certification should verify substitute qualification status with the manufacturer.

Q: What does the impedance (Zzt) parameter indicate for Zener diode substitution?

A: Impedance (Zzt) represents the dynamic impedance of the Zener diode at specified operating conditions. Lower impedance indicates better voltage regulation characteristics. The ZPY36-TAP has 25 Ohms maximum impedance, while substitutes range from 38 to 50 Ohms. Applications sensitive to voltage ripple or requiring tight regulation should account for impedance differences.

Q: Can the 1N5938BRLG be used in place of the ZPY36-TAP in a 1.3 W application?

A: Yes. The 1N5938BRLG's 3 W power rating exceeds the 1.3 W requirement, providing adequate thermal capacity. The higher power rating does not create compatibility issues; it provides additional design margin.

Q: What is the significance of reverse leakage current differences among these parts?

A: Reverse leakage current affects circuit performance in low-current applications and influences standby power consumption. The ZPY36-TAP has 500 nA leakage, while substitutes range from 1 µA to 5 µA. Applications with strict leakage requirements should verify substitute specifications.